The Wireless Magnetic-Inductive Liquid Level Gauge is a high-tech intelligent liquid level gauge developed by our company based on our extensive technical accumulation in sensor signal processing, mathematical modeling, information computation, and intelligent communication, in response to industrial field demands. This gauge is a high-precision, long-range linear position measurement liquid level sensor, manufactured using the magnetic-inductive principle, capable of measuring the liquid surface of storage tanks. It boasts high accuracy, strong environmental adaptability, high reliability, simple installation, and convenient maintenance. The wireless communication integrates three popular industrial wireless communication methods: ZigBee, LoRa, and NB-IoT. It employs advanced low-power consumption devices and comprehensive software management technology, featuring priority handling mechanisms for data alarms, data bursts, instrument failures, and battery alarms, ensuring real-time data monitoring and instrument status. It is powered by an internal high-capacity, high-performance lithium battery. It achieves remote real-time monitoring, wireless transmission, and eliminates the need for on-site wiring, saving the trouble and costs associated with conventional instruments that require on-site wiring. It is widely used in liquid level measurement fields such as oil, chemicals, food, and pharmaceuticals, and is gradually replacing other traditional liquid level instruments, becoming a better choice for liquid level measurement.
The wireless magnetostrictive level gauge operates by exciting a pulse current in the sensor circuit on the waveguide wire. As this current propagates along the waveguide wire, it generates a pulse current magnetic field around it. The magnetostrictive principle involves detecting the time at which strain pulse signals are produced when different magnetic fields intersect to calculate the precise location of the intersection point. The sensor rod of the intelligent level gauge is equipped with a float that can move up and down along the rod with the change in liquid level. Inside the float, there is a set of magnetic rings. When the pulse current magnetic field encounters the magnetic field of the rings produced by the float, the magnetic field around the float changes, causing a torsional wave pulse to be generated at the float's position by the magnetostrictive material of the waveguide wire. This pulse travels back along the waveguide wire at a fixed speed and is detected by the detection mechanism. By measuring the time difference between the pulse current and the torsional wave, the position of the float, i.e., the liquid level, can be accurately determined. Technical advantages of the magnetostrictive level gauge: Suitable for high-precision level measurement of clean liquids, with accuracy up to 0.1mm, and the new product's accuracy can reach 0.01mm.
- Vessels used in oil storage and processing, such as flash vaporizers and separators.
Level measurement, control, and monitoring in industries such as chemicals, water treatment, electricity, papermaking, metallurgy, and boilers.
-Tolerant to high and low temperatures, corrosion-resistant, wear-resistant, and high-pressure-resistant.
- Dust-resistant, steam-testable, material-installation-friendly, no need for parking.
- Suitable for side-mounted tank level measurement, such as flash evaporators, separators, and heating furnaces.
- Lightning protection, anti-interference, explosion-proof design, suitable for flammable and explosive environments.
- Intelligent real-time self-correction, ensuring accurate, stable, and reliable measurements.
- Long service life, maintenance-free, enhancing engineering quality and production efficiency.
AES-128 encryption algorithm, network authentication and authorization, ensuring data security and reliability.
-Automatic Frequency Hopping Technology with unique anti-interference capability;
Measurement Range
(50 to 4000) mm (Customizable according to customer requirements)
Accuracy Grade
0.2 Class ±1mm, 0.5 Class ±1mm, 1 Class ±1mm
Linear Error
≤0.05％FS
Repetitive Accuracy
≤0.002%FS
Temperature Stability
≤0.002%/℃
Power Supply Method
Built-in 7.2V high-performance lithium battery
Output Signal
（4～20）mA
Contact Information
RS485 (Modbus RTU Protocol)
Ambient Temperature
（-30～70）℃
Relative Humidity
＜90%
Atmospheric Pressure
（86～106）kPa
Temperature measurement of the medium
（-40～85）℃
Protection Level
IP65
Explosion-Proof Mark
ExdIIBT4 Gb
Work pressure
Atmospheric pressure to 10 MPa
Medium Density
（0.5～2.0）g/cm3
Wireless Frequency Band
ISM（2.4~2.5）GHz（IEEE 802.15.4 DSSS）
Wireless Certification
Zigbee：FCC ID: MCQ-XBS2C，IC: 1846A-XBS2C
Wireless Protocol
Zigbee 2007 (compatible with PetroChina's oil and gas production IoT A11-GRM communication protocol)
Receiving Sensitivity
-103dBm
Emission Power
8dBm max
Cybersecurity
AES-128 encryption algorithm, network authentication and network authorization
Top-mounted, Measuring-mounted
